Is it really necessary to use hose clamps on the plastic adapter between the spider hose and the overflow tank hose? I figured I could get away without any for now to just test the system since that part sees no real pressure. Thankfully I put in only a bit of coolant, to check bit by bit. And that juncture leaks like a sieve! I hurried to put on a hose clamp on the overflow tank side figuring since the adapter came with the spider hose it can't be leaking there... wrong. So pretty much all of the coolant I put in ended up on the floor bit by bit. Fuck. I don't really even see a hose clamp helping so much if it isn't watertight with 0 pressure (and undiluted coolant is pretty damn viscous too). This can't be right...
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put a clamp on it
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Pics would help, I'm not entirely sure what adapter you're talking about. I just used the e30 spider hose and it worked fine. As a general rule, if you are attaching a coolant hose to a nipple or adapter, it will need a hose clamp.Comment
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I'm not joking. And I didn't say the cooling system sees no real pressure, I said that juncture doesn't, not until things warm up. It's just the overflow line. I wanted to feed in the coolant and crank the engine a few times to circulate it to see if anything leaks before putting everything at operating pressure/temperature. But I clearly didn't get that far.
This is where the hose from the overflow tank meets the big hose that feeds the engine/return line from heater/supply to throttle body warming circuit.Originally posted by DaNComment
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ok, got it.
the entire cooling system is pressurized when warm. (everyone knows that, i didnt realize you were talking about when it was cold. my mistake. )
AND parts of the cooling system is under slight hydraulic "thump" pressure upon cold start. its a low pressure thump, but enough to blow a seal that is barely holding on (like a hose with no clamp.)
cheers, jason
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I never got to crank it. I was just filling the coolant. Only got a handful in and had a look if anything was seeping and that junction was. The only thing I can think of other than a crack or a tear, is that it was colder than Hilary's cooch in the garage yesterday (my small toes took an hour to get warmed up when I got home, it was like -15 outside) and maybe that plastic fitting shrunk more with the temperature than the rubber... Oh well, I guess I'll try it again with a hose clamp.Comment
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Alright, well sorry for assuming that a plastic barbed fitting inside a rubber hose should be watertight to a viscous fluid and shouldn't leak. But I'm glad you guys got a laugh out of my concerns.
No, I didn't fill the coolant. For the third time already, I simply put a little bit in to see if the hose was watertight. It was not and I am wondering if this is a concern for me (such as the fitting is defective), I didn't mean to get your panties in a bunch.so let me get this straight.......
you put a coolant hose on without any clamp, filled the coolant, and are now asking why it leaked?Last edited by BigD; 01-20-2008, 10:59 AM.Comment
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I've always found putting 75w90 gear oil there stops the leak.
-CharlieSwing wild, brake later, don't apologize.
'89 324d, '76 02, '98 318ti, '03 Z4, '07 MCS, '07 F800s - Bonafide BMW elitist prick.FYYFFComment
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This is almost as good as your oil pan thread was.sigpicFormer professional wrench thrower.
Current:
1988 325is S52
Former:
2008 Sparkling Graphite M3 Sedan(victim of home ownership)
1988 M5
1996 328isComment
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curious thread
635csi Euro/Alpina B7SComment
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